如何检查android应用程序是否处于后台或前台或终止?
我想检查我的应用程序状态,现在很容易我得到我的应用程序在后台或前台使用下面的代码,但我不知道如何检查应用程序被杀死或终止谁可以帮助这个问题。使用下面的代码,我在后台或前台检查应用程序如何检查android应用程序是否处于后台或前台或终止?,android,android-activity,background,Android,Android Activity,Background,我想检查我的应用程序状态,现在很容易我得到我的应用程序在后台或前台使用下面的代码,但我不知道如何检查应用程序被杀死或终止谁可以帮助这个问题。使用下面的代码,我在后台或前台检查应用程序 public static boolean isAppIsInBackground(Context context) { boolean isInBackground = true; ActivityManager am = (ActivityManager) context.get
public static boolean isAppIsInBackground(Context context) {
boolean isInBackground = true;
ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
if (Build.VERSION.SDK_INT > Build.VERSION_CODES.KITKAT_WATCH) {
List<ActivityManager.RunningAppProcessInfo> runningProcesses = am.getRunningAppProcesses();
for (ActivityManager.RunningAppProcessInfo processInfo : runningProcesses) {
if (processInfo.importance == ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
for (String activeProcess : processInfo.pkgList) {
if (activeProcess.equals(context.getPackageName())) {
isInBackground = false;
}
}
}
}
} else {
List<ActivityManager.RunningTaskInfo> taskInfo = am.getRunningTasks(1);
ComponentName componentInfo = taskInfo.get(0).topActivity;
if (componentInfo.getPackageName().equals(context.getPackageName())) {
isInBackground = false;
}
}
return isInBackground;
}
public静态布尔值isAppIsInBackground(上下文){
布尔值isInBackground=true;
ActivityManager am=(ActivityManager)context.getSystemService(context.ACTIVITY_服务);
if(Build.VERSION.SDK\u INT>Build.VERSION\u code.KITKAT\u WATCH){
List runningprocesss=am.getrunningappprocesss();
对于(ActivityManager.RunningAppProcessInfo processInfo:RunningProcesss){
if(processInfo.importance==ActivityManager.RunningAppProcessInfo.importance\u前台){
for(字符串activeProcess:processInfo.pkgList){
if(activeProcess.equals(context.getPackageName())){
isInBackground=假;
}
}
}
}
}否则{
List taskInfo=am.getRunningTasks(1);
ComponentName componentInfo=taskInfo.get(0).topActivity;
if(componentInfo.getPackageName().equals(context.getPackageName())){
isInBackground=假;
}
}
返回背景;
}
如果您的minSDK是14+,一般的共识似乎是在实现ActivityLifecycleCallbacks()的类中使用计数器。有一段youtube视频描述了Firebase如何使用这种技术 这是一个完美的代码,检查到桌面方法
private boolean isAppIsInBackground(Context context) {
boolean isInBackground = true;
ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
if (Build.VERSION.SDK_INT > Build.VERSION_CODES.KITKAT_WATCH) {
List<ActivityManager.RunningAppProcessInfo> runningProcesses = am.getRunningAppProcesses();
for (ActivityManager.RunningAppProcessInfo processInfo : runningProcesses) {
if (processInfo.importance == ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
for (String activeProcess : processInfo.pkgList) {
if (activeProcess.equals(context.getPackageName())) {
isInBackground = false;
}
}
}
}
} else {
List<ActivityManager.RunningTaskInfo> taskInfo = am.getRunningTasks(1);
ComponentName componentInfo = taskInfo.get(0).topActivity;
if (componentInfo.getPackageName().equals(context.getPackageName())) {
isInBackground = false;
}
}
return isInBackground;
}
private boolean isAppIsInBackground(上下文){
布尔值isInBackground=true;
ActivityManager am=(ActivityManager)context.getSystemService(context.ACTIVITY_服务);
if(Build.VERSION.SDK\u INT>Build.VERSION\u code.KITKAT\u WATCH){
List runningprocesss=am.getrunningappprocesss();
对于(ActivityManager.RunningAppProcessInfo processInfo:RunningProcesss){
if(processInfo.importance==ActivityManager.RunningAppProcessInfo.importance\u前台){
for(字符串activeProcess:processInfo.pkgList){
if(activeProcess.equals(context.getPackageName())){
isInBackground=假;
}
}
}
}
}否则{
List taskInfo=am.getRunningTasks(1);
ComponentName componentInfo=taskInfo.get(0).topActivity;
if(componentInfo.getPackageName().equals(context.getPackageName())){
isInBackground=假;
}
}
返回背景;
}
这可能有一些用处: